fglIsTexture(3G)

NAME
     fglIsTexture - determine if a name corresponds to a texture


FORTRAN SPECIFICATION
     LOGICAL*1 fglIsTexture( INTEGER*4 texture )


PARAMETERS
     texture  Specifies a value that may be the name of a texture.

DESCRIPTION
     fglIsTexture returns GL_TRUE if texture is currently the name of a
     texture.  If texture is zero, or is a non-zero value that is not
     currently the name of a texture, or if an error occurs, fglIsTexture
     returns GL_FALSE.

NOTES
     fglIsTexture is available only if the GL version is 1.1 or greater.

ERRORS
     GL_INVALID_OPERATION is generated if fglIsTexture is executed between the
     execution of fglBegin and the corresponding execution of fglEnd.


MACHINE DEPENDENCIES
     RealityEngine, RealityEngine2, and VTX systems do not support texture
     name sharing.  Texture names are always local to the rendering context
     which was active at the time the names were created.

     The implementation on O2 systems uses a minimum of 64K bytes for every
     texture object defined.


SEE ALSO
     fglBindTexture, fglCopyTexImage1D, fglCopyTexImage2D, fglDeleteTextures,
     fglGenTextures, fglGet, fglGetTexParameter, fglTexImage1D, fglTexImage2D,
     fglTexImage3D, fglTexParameter